Attachment to spectacles.



No. 811,564. PATENTBD FEB. 6, 1906.

J. P. JACKSON.

ATTACHMENT T0 SPEGTAGLBS. armonica HLBD :101231. 1094.

fa/ZILVEJlC/wl lnvehtor.

JOHN PLUMMER JACKSON, ORLEANS, INDTANA.

ATTACHMENT TO SPECTACLES.

Specication of Letters Patent.

Patented Feb. 6, 1906.

applies@ and comte 31,1904. sami no. 230.833.

To all whom it may concern:

Beit linown that I, J ons PLUMMER JACK- SON, a citizen of the UnitedStates, residing at Orleans, in the county of Orange and State ofindiana, have invented a new and useful Attachnient to Spectacles, ofwhich the followi is a speciiication.

This invention relatesvto spectacles, and especially to that class ofeyeglasses or spectaio Vcles known as grab-fronts.

A further object of the invention is to provide a deviceof thischaracter in which the supplemental lenses are arranged in a frame thatmay be readil attached to the ordinary i eyeglass or spectac e framewithout danger pi scratching or otherwise injuring either set of lenses.

A still further object oi the invention is to provide a grab-frontattachment in which the zo supplemental lenses will be held outward atan acute angle to the plane of the main lenses in a position mostfavorable for use.

A still further object of the invention is to rovide a grab-front framethat may be ready `b ent to assume any desired sha for at taehing tospectacles or eyeglasses o any size. With these and other objects inview, as will morefully hereinafter a ear, the invention consists 1ncertain novellleatures of con 3o struction and arran ement of partshereinafter fully described, illustrated in the accompanying drawings,and articularly pointed out in' the appended claims, it being understoodthat. various changes in the form, proportions, size, and minor detailsof the structure may be niade without departing from the s irrt orsacrificing any of the advantages of t e invention.

In the' accompanying drawings, Figure 1 is 4o a face view of a pair ofspectacles rovided with a grab-front in accordance witli the invention.Fig. l2 is a transverse sectional view of the saine on theline 2 2 ofFig. 1. Fig. 3 1s a detail perspective viewr of the grab-front detached.

numerals of reference are employed to indicate correspondjnrpartsthroughout 'the several figures of the a A The pair of tacles 10 may eof any deconstruction, those shown in the present instance beingprovided with the usual end lugs 11 arranged hfor pivotal connection tothe temples or bows 12.

The frame of the grab-front is formed of two curved strips 15, that areconnected by a tively. The sup 'tions of a spectacle-frame,

, general plane to which the strips and spring bowed spring 16, and toeach of the strips 15 is secured an annular frame 17 for the receptionof the supplemental lenses 18. Each of the strips 15 1s formed of metalthat may be bent in order to conform to the contour of the frames ofthemain lenses, and the connection between the springr and the strips 15 isof a type usually found 1n eyeglasses and the like, the ends of thespring tending normally to move toward each other, and thas draw thestrips 15 in opposite directions, respecemental frame is provid ed withnose ,-guar s 19 in the form of small blocks or strips that are securedto the ends of the spring, these guards pressing against the nose of thewearer and forming an auxiliary holdin means, so that the attachment isnot who ly dependent on the spectaclefraine for its support.

To each of t e spring arms or strips 15 is secured a pair of clips 2021, that are extended rearwardly and engage with the frame of thespectacles, the end clips 21 being disposed immediately above and restiupon the end lugs 11 of said frame, while t e clips 20 engage againstthe rear portion of the frame at a oint adjacent to the supplementallenses.

en the attachment has been adjusted to the spectacle-frame, thesupplementel lenses are extended out at an acute angle to the planeoftheinainlenseaas showninore clearlyinlig, 2, so that reflectedlightrays from the ob1ect being examined cannot enter the eye. Theframes are of such nature, moreover, that the lenses cannot come in.contact with each other nor can the frame of one lens engage the lenscarried by the op osite frame, so that accidental scratching ofp thelenses is avoided.

Ha i Athus described the invention,what is claiine is- 1. In anattachment for spectacles and the like, a frame including a pair of stricurv to oliow the general contour of the ower pora nose-engagingpipi-ing connecting said strips and ten ing t0 aw them toward' eachother, clips carried b the strips and adapted to engage the franie o thespectacles, an auxiliary lenses carried by said strips and disposed atan angle to the roo are arranged.

2. In an attachment for spectalesand the like, a frame including a pairof curved stri s, a spring connecting said strips and ten to draw thesame toward each other, i io and adapted to engage the frame of the mamIn testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two Witnesses.

JOHN PLUMMER JACKSON.

Witnesses:

HENRY REED, CHARLES P. COLLINS.

nose-guards secured to the spring, auxiliary lens-supporting framessecured at their lower edges to the strips at points near the ends ofthe latter, lenses in said supporting-frames, end spring-clips carriedby said curved strips glasses.

